Evidence map›Paper›PMID 22371481›Full record

ArticleThe Journal of physiology2012

Embryonic assembly of auditory circuits: spiral ganglion and brainstem.

Glen S Marrs, George A Spirou

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
3.3field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

32 citing papers in PubMed, 58 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Targeted spiral ganglion neuron degeneration in parvalbumin-Cre neonatal mice.Molecular therapy. Methods & clinical development · 2025
    Article
  5. Review
  6. Article
  7. Article
  8. Purinergic Signaling Controls Spontaneous Activity in the Auditory System throughout Early Development.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021
    Article
  9. Article
  10. Article
  11. Article
  12. Neurod1 Is Essential for the Primary Tonotopic Organization and Related Auditory Information Processing in the Midbrain.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2019
    Article
  13. Article
  14. Talking back: Development of the olivocochlear efferent system.Wiley interdisciplinary reviews. Developmental biology · 2018
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 2 institutions in 1 country.

Glen S MarrsCenter for Neuroscience, West Virginia University School of Medicine, Morgantown, WV 26506-9303, USA. gspirou@hsc.wvu.edu
George A Spirou
American Academy of Otolaryngology — Head and Neck Surgery · USCenter for Neurosciences · US

Funding

Development of the Calyx of HeldR01DC007695 · NIDCD · WEST VIRGINIA UNIVERSITY · PI GEORGE A SPIROU, HENRIQUE Prado VON GERSDORFF · 2007 to 2026
$6.2M
TRANSGENIC ANIMAL COREP30RR031155 · NCRR · WEST VIRGINIA UNIVERSITY · PI WYSOLMERSKI, ROBERT B. · 2010 to 2011
$2.8M
NCRR NIH HHS P30 RR031155NIDCD NIH HHS DC007695NIDCD NIH HHS F32 DC105462NIDCD NIH HHS R01 DC007695
6 · The paper itself

Abstract

During early development, peripheral sensory systems generate physiological activity prior to exposure to normal environmental stimuli. This activity is thought to facilitate maturation of these neurons and their connections, perhaps even promoting efficacy or modifying downstream circuitry. In the mammalian auditory system, initial connections form at embryonic ages, but the functional characteristics of these early neural connections have not been assayed. We investigated processes of embryonic auditory development using a whole-head slice preparation that preserved connectivity between peripheral and brainstem stations of the auditory pathway. Transgenic mice expressing fluorescent protein provided observation of spiral ganglion and cochlear nucleus neurons to facilitate targeted electrophysiological recording. Here we demonstrate an apparent peripheral-to-central order for circuit maturation. Spiral ganglion cells acquire action potential-generating capacity at embryonic day 14 (E14), the earliest age tested, and action potential waveforms begin to mature in advance of comparable states for neurons of the ventral cochlear nucleus (VCN) and medial nucleus of the trapezoid body (MNTB). In accordance, auditory nerve synapses in the VCN are functional at E15, prior to VCN connectivity with the MNTB, which occurs at least 1 day later. Spiral ganglion neurons exhibit spontaneous activity at least by E14 and are able to drive third-order auditory brainstem neurons by E17. This activity precedes cochlear-generated wave activity by 4 days and ear canal opening by at least 2 weeks. Together, these findings reveal a previously unknown initial developmental phase for auditory maturation, and further implicate the spiral ganglion as a potential controlling centre in this process.

Indexed as

AnimalsAnimals, NewbornAuditory PathwaysBrain StemEmbryo, MammalianEmbryonic DevelopmentIn Vitro TechniquesMiceSpiral Ganglion

Identifiers

PMID22371481
PMCPMC3424760
OpenAlexW1928060440

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.